我尝试了flutter升级和pod更新，但是我仍然无法为IOS进行构建。 /Users/mac006/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_messaging-6.0.16/ios/Classes/FLTFirebaseMessagingPlugin.m:195:43：警告：“ FIRMessagingRemoteMessage”已弃用：FCM直接 不建议使用该通道，请使用APN进行下游消息处理。 [-Wdeprecated-clarations] -（void）applicationReceivedRemoteMessage：（FIRMessagingRemoteMessage *）remoteMessage { ^ 在从中导入的模块“ FirebaseMessaging”中 /Users/mac006/Documents/alfinity/ios/Pods/Headers/Public/Firebase/Firebase.h:74： /Users/mac006/Documents/alfinity/ios/Pods/FirebaseMessaging/FirebaseMessaging/Sources/Public/FIRMessaging.h:219:1：注意：“ FIRMessagingRemoteMessage”已在此处明确标记为已弃用 __deprecated_msg（ ^ 在从/ Users / mac006 / Documents / alfinity / ios / Pods / Target Support导入的模块'UIKit'中 文件/firebase_messaging/firebase_messaging-prefix.pch:2： 在从中导入的“基础”模块中 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8： 在从中导入的模块“ CoreFoundation”中 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:6： 在从中导入的模块“ Darwin”中 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.0.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:16： /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.0.sdk/usr/include/sys/cdefs.h:200:48：注意：从宏“ __deprecated_msg”展开 #define __deprecated_msg（_msg）属性（（（不建议使用（_ msg）））